USGS IMAP 755: Geologic map of the Byrgius Quadrangle of the Moon
1973 (approx.)

Detailed Description
USGS IMAP 755: Geologic map of the Byrgius Quadrangle of the Moon
By H. G. Wilshire
Map and associated documents available from the USGS Publications Warehouse: https://doi.org/10.3133/i755
Sources/Usage
Public Domain.